Birty Dastards Jeep Club

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: YJ Parabolic rear springs on a CJ?  (Read 9678 times)

0 Members and 1 Guest are viewing this topic.

johnnyboy

  • Guru
  • *
  • Guru: 0
  • Offline Offline
  • Posts: 206
  • Vehicle: 79 CJ7 LHD 258 owned since 1980, 79 CJ7 LHD 304 quadratrack - nuts and bolts rebuild almost done...
  • Year: 1979
YJ Parabolic rear springs on a CJ?
« on: August 14, 2018, 10:44:54 AM »
Anybody tried this? (USA sites say it is easy and improves the ride?)


My springs and bushes etc. are 40 years / 98,000 miles old......


I could get some new Crown ones from Lighthouse for £150 each or I could get a lift kit, but I don't really need a lift...


Anybody got some so I could give it a try?
Logged

wildwood

  • The 1 Tonne Kid
  • Marshal
  • Guru
  • *
  • Guru: 14
  • Offline Offline
  • Posts: 5921
Re: YJ Parabolic rear springs on a CJ?
« Reply #1 on: August 14, 2018, 11:21:43 AM »
Tried a lift on the YJ ....now,the 1 Tonne....
Rubicon Express.  2 1/2 " lift .....it was good and great articulation
Then went 4 1/2 for larger tyres.....also great....l
Sold them both when doing SOA with 1 tonne axles on the YJ
Used Crown from Lighties HD rears on all 4 corners
Works well and supports the weight of 1 ton axles and 40" tyres no prob

Sorry don't have any to loan.
Logged

johnnyboy

  • Guru
  • *
  • Guru: 0
  • Offline Offline
  • Posts: 206
  • Vehicle: 79 CJ7 LHD 258 owned since 1980, 79 CJ7 LHD 304 quadratrack - nuts and bolts rebuild almost done...
  • Year: 1979
Re: YJ Parabolic rear springs on a CJ?
« Reply #2 on: August 14, 2018, 01:38:08 PM »
Just to be clear, if anybody has (or knows of...) some standard YJ parabolics lying around I will pay money for them.....


(unless somebody tells me its not worth doing?)
Logged

bigjeepzj

  • Club Member
  • Guru
  • *
  • Guru: 22
  • Offline Offline
  • Posts: 3438
  • lift it, brake it, Fix it brake it, fix it again
Re: YJ Parabolic rear springs on a CJ?
« Reply #3 on: August 14, 2018, 07:49:00 PM »
Logged

johnnyboy

  • Guru
  • *
  • Guru: 0
  • Offline Offline
  • Posts: 206
  • Vehicle: 79 CJ7 LHD 258 owned since 1980, 79 CJ7 LHD 304 quadratrack - nuts and bolts rebuild almost done...
  • Year: 1979
Re: YJ Parabolic rear springs on a CJ?
« Reply #4 on: August 15, 2018, 12:40:36 AM »
I have now been told that standard TJ ride height is lower than CJ, so putting stock YJ rears on will not really work...


Can anybody confirm this?
Logged

BIGDRY

  • Guest
Re: YJ Parabolic rear springs on a CJ?
« Reply #5 on: August 28, 2018, 03:03:18 PM »
who told you that Jonny? i too am looking into this plan for my cj7 which also "sports" old tired oe springs - i too do not want a massive lift (it wont fit in my garage if i go much higher than stock!)

it does make sense as the only yj spring conversions for cj i have seen seem to feature yj +2/2.5" springs - i guess if the stock yj spring is indeed softer it would let your cj7 sit lower hence the extra ride height version being best suited for cj7s.
Logged

wildwood

  • The 1 Tonne Kid
  • Marshal
  • Guru
  • *
  • Guru: 14
  • Offline Offline
  • Posts: 5921
Re: YJ Parabolic rear springs on a CJ?
« Reply #6 on: August 28, 2018, 09:43:25 PM »
If I remember correctly....
YJ rear shackles have the top bolt through the çhassis ....half way up...
CJ rear shackles are held by a bracket riveted to the bottom of the çhassis


Therefore....


YJ springs on a CJ will have maybe an inch more lift at the rear than when on a YJ...
Logged
Pages: [1]   Go Up
« previous next »
 
Powered by EzPortal